/*
  Copyright (C) 2011, Kyungjoo Kim
  
  This file is part of LINAL (LINear ALgebra)
  
  All rights reserved.

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.
  
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.
  
  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  Also add information on how to contact you by electronic and paper mail.
  
  
  Kyungjoo Kim
  iamkyungjoo@gmail.com
*/

#include "linal/common.hxx"
#include "linal/util.hxx"

namespace linal {
  // --------------------------------------------------------------
  // ** OpenMP Lock
  std::vector< omp_lock_t > locks;

  void init_locks(int n_locks) {

    if (locks.size())
      destroy_locks();

    omp_lock_t in;
    for (int i=0;i<n_locks;++i) 
      locks.push_back( in );

    for (int i=0;i<locks.size();++i)
      omp_init_lock( &locks[i] );
  }

  void destroy_locks() {
    for (int i=0;i<locks.size();++i) 
      omp_destroy_lock( &locks[i] );

    locks.clear();
  }

  void set_lock(int i) {
    LINAL_ERROR(i < locks.size(), ">> Out of range");
    printf("attempt lock\n");
    omp_set_lock( &locks[i] );
    printf("done lock\n");
  }

  void unset_lock(int i) {
    LINAL_ERROR(i < locks.size(), ">> Out of range");
    omp_unset_lock( &locks[i] );
  }

  int test_lock(int i) {
    LINAL_ERROR(i < locks.size(), ">> Out of range");
    return omp_test_lock( &locks[i] );
  }

}
